Insulation resistance tester



FIG. 1 is a front elevational view of an insulation resistance tester, showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view thereof;

FIG. 8 is a front elevational view thereof, showing a display unit displaying an image;

FIG. 9 is a perspective view thereof, showing a cover slid;

FIG. 10 is a perspective view thereof, showing the slid cover rotated by 90°;

FIG. 11 is a perspective view thereof, showing a front panel covered by a cover;

FIG. 12 is front elevational view thereof, showing the front panel covered by the cover;

FIG. 13 is a rear elevational view thereof, showing the front panel covered by the cover;

FIG. 14 is a left side elevational view thereof, showing the front panel covered by the cover;

FIG. 15 is a right side elevational view thereof, showing the front panel covered by the cover;

FIG. 16 is a top plan view thereof, showing the front panel covered by the cover; and,

FIG. 17 is a bottom plan view thereof, showing the front panel covered by the cover. 

CLAIM We claim the ornamental design for an insulation resistance tester, as shown and described. 